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#!/usr/bin/env python
# ===-- objdump -----------------------------------------------------------===##
#
# The KLEE Symbolic Virtual Machine
#
# This file is distributed under the University of Illinois Open Source
# License. See LICENSE.TXT for details.
#
# ===----------------------------------------------------------------------===##
"""
An objdump wrapper for use with klee & kcachegrind.
This allows klee to output instruction level statistic information which
kcachegrind can then display by intercepting kcachegrind's calls to objdump
and returning the LLVM instructions in a format that it can parse.
"""
import os, sys
kActualObjdump = os.path.join(os.path.dirname(__file__),'objdump.actual')
if not os.path.exists(kActualObjdump):
for path in ['/usr/bin','/usr/local/bin']:
p = os.path.join(path,'objdump')
if os.path.exists(p):
kActualObjdump = p
def fakeObjdumpOutput(file, start, end):
print 'Using fake objdump output:\n\n'
lines = open(file).readlines()
for i in range(max(0,start-1),min(end-1,len(lines))):
print '%x:\t00 00\t%s'%(i+1,lines[i])
def main(args):
# exact pattern match kcachegrind's calling sequence
if (len(args)>=6 and
args[1]=='-C' and
args[2]=='-d' and
args[3].startswith('--start-address=') and
args[4].startswith('--stop-address=') and
args[5].endswith('.ll')):
fakeObjdumpOutput(args[5], eval(args[3].split('=',1)[1]), eval(args[4].split('=',1)[1]))
else:
os.execv(kActualObjdump, args)
raise RuntimeError
if __name__=='__main__':
main(sys.argv)
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